Steam-valve.



(No Model.)

Patented July 2, .ISDL 0. RICHTER.

STEAM VALVE.

(Application led Dee. 18, 1900.

2 Sheets-Sheet l.

Patnted luly 2, |901. D. RICHTER.

STEAM VALVE.

(Application led Dec. 18, 1900.)

2 Sheets-Sheet 2.

(No Model.)

YQ LZ@ t/'rays vno'rauwu. Asnma N n c ilNTTaD STATE-s OTTOKAR RICHTER,OF KIEL, GERMANY.

SPESEFCATION forming part of Letters Patent No. 677,470, dated 1' uly 2,1901. Application filed December 18, 1900. Serial No. 40,828. (Nomodali' To @ZZ whom, it may concern.-

Be it known that I, OTTOKAR RICHTER, a subject of the Emperor ofGermany, residing at .fl-.t l-Ioltenauerstrasse, Kiel, German Empire,have invented a new and useful Steam- Valve, of which the following is aspecification.

My invention has for its object to bring about a reliable automaticclosure of a steampipe at the moment of a breakv occurring in the pipeor an explosion in the interconnected boiler or other similar mishap,even when the size of the fracture is relatively small tothe diameter ofthis selfclosing valve. Its use Obviates stuffing-boxes or glands inconnection With the valve-cone and deposition of boiler-scale on theWorking parts, and, further, special actuating-pistons, springs, orWeighted levers and similar actuating devices are not required. Thesimple construction renders the action thoroughly reliable, as the onlyagent for holding open and closed the valve is the full steam-pressure.Consequently an accidental closure of the valve by a sudden removal of alarge quantity of steam or of a rapid generation of steam, as is oftenthe case in other valves already in use for this purpose, is impossible.

In the accompanying drawings, Figure l is a longitudinal sectional Viewofthe valve, and Fig. 2 a cross-sectional view of the same.

The same letters of reference refer throughout to similar parts.

According to my invention the valve-casing ct is provided with flangedor socketed ends and contains the usual diagonal partition b, possessinga port or opening for the passage of the steam from one part of thevalve-oasing to the other, the edge of said opening forming thevalve-seat c. The valve proper is formed by a circular plate CZ, theedge of which is conically shaped, and which plate is formed into apiston-like cylindrical extension c on the other side, which extensionlits in a corresponding cylinder or sleeve e', formed in the cover ofthe valve-casing. This extension e is made hollowand receives theflanged head f of a threaded spindle g, which is loosely attached to thevalve by means of a ring 7i, screwed into the threaded free end of thecylinder e, so as to play freely therein. The valve, together With itsex-l tension, can be raised or lowered by means of said spindle, whichhas a central channel i, connected with the external atmosphere.

Athreaded for the attachment of a pipe Z, conducting to some convenientposition for observation at any time by those in charge.

The valve-spindle g can be secured in position after adjustment by aspring-pawl m, Fig. l.

The casing a is secured on the steam-dome casing of the safety-valve orany other suitable part of the steam-pipe system as near to the boileras possible, by the liange or socket which terminates the steamway whichis under the steam-port, While the opposite iiange or socket isconnected to the steampipe. v

The valve Works as follows: When the valvespindle is in the raisedposition, the steam can pass, as usual, through the opening or port inthe partition b. It also passes through the special pipe connection tothe underneath side of the cylinder e, and as the pressure-surface ofthe valve-cone d is somewhat larger than the surface of the pistoniniiuenced by steam coming through the connection n the valve-plate CZ,with the cone t" on its under side, Will be pressed against thevalve-seat formed in the head of spindle g and close the connection withthe external atmosphere. Should a breakage now occur in the pipeattached to the ange, the steampressure above the valve Will bediminished, so that the undiminished pressure of the steam beneath itpresents a paramount upward pressure and presses the valve tightlyagainst the seat c, and consequently closes same, so that no more steamcan pass to the broken pipe. The steam in the valve-casing andsteam-delivery pipe passes now through the channel il in the spindle g,and by the ICO exit of the steam through the pipe connected thereto andgives notice of the breakage to the attendant in charge.

Having noW described n'iy invention, I claiml. A stearn-valve having adouble-seated valve-body for the automatic closure of a steam-pipe onits one side and of a connection with the external atmosphere on itsother side, said valve-body being under the Weight of the steam-pipepressure on the one side and of the boiler-pressure on the other sidesubstantially as set forth.

2. In a steam-valve for the automatic closure of stearn-pipes thecombination of a casing, a diagonal partition therein, a valve-seatformed in said partition, a circular Valveplate having a conical edgefitting on said seat, a-holloW cylindrical extension on the other Sidecf said valve-plate, a cover on said casing, a sleeve formed in saidcover and receiving said cylindrical extension, a screwthreaded Valvespindle mounted in said sleeve, a flanged head on said spindle Withinsaid hollow extension, a ring screwed into the threaded free end of saidextension so as to afford a free play of the spindle Within thevalve-body, a central channel formed in the spindle and having aconnection With the external atmosphere, a valve-seat in the inner endof said channel, a cone secured to the valve-plate and resting normallyon the latter seat and a pipe connection to be connected with the boilerand entering said sleeve out of the reach of said valve extension,substantially as described and set forth.

OTTOKAR RICHTER. .Vitnesses':

JULiUs RPKE, HEINRICH MLLER'.

